In this episode, we hear about self-esteem, a new genus of extinct horse, the future of biological engineering, mosquito trackers, and sperm competition in salmon.

In this episode we hear about heat-seeking behaviour in mosquitos, mass spawning in coral reefs, social organization in ants, fear in rats and tissue regeneration in newts.

In this episode we hear about parasitic worms, dog tumours, epilepsy, DNA sequencing classes and social behaviour in mice.

In this episode we hear about the first heartbeat, African sleeping sickness, elephant genetics, the rubber hand illusion and women in science.